OBS Camera & Mic Sync Offset Calibrator
Eliminate out-of-sync talking heads on Twitch and YouTube. Calculate exact OBS Audio Sync Offset (ms) between fast XLR/USB microphones and slower HDMI capture card cameras.
โ๏ธ Hardware Chain Latency
๐ฏ Calculated OBS Sync Offset & Clapper Meter
2. Locate your Mic/Aux channel.
3. Enter 95 ms into the Sync Offset box so your voice waits for the HDMI camera frame to finish rendering.
๐ Why Your Microphone Is Always Faster Than Your Camera
Human ears detect audio-visual lip-sync errors when sound leads video by more than +45 milliseconds. Because an XLR or USB microphone converts analog sound waves into digital PCM packets in just 2 to 10 milliseconds, your voice enters OBS almost instantaneously.
Conversely, a mirrorless camera (like a Sony a6400 or ZV-E10) must scan its CMOS sensor, encode an HDMI signal, pass it through an Elgato Cam Link capture card, and decode it over USBโa pipeline taking 80 to 130 milliseconds. Without adding a positive Sync Offset to your microphone in OBS, viewers see your lips move after they hear your words.